It's a dog-eat-dog world out there.
It's also a 'cat-eat-'cat world, that is, when a caterpillar eats another caterpillar. Or in this case, when larva eats larva.
We recently spotted this lady beetle larva eating a syrphid fly larva on our yellow rose bush, "Sparkle and Shine." Both eat aphids, and that's exactly what they were doing until the lady beetle larva attacked--and began eating--the syrphid larva.
These insects are beneficial. The lady beetle, as an adult, continues to consume those pesky aphids. The syrphid fly adult, aka hover fly or flower fly, is a pollinator.
The hungry larva reminded us of Eric Carle's award-winning children's picture book, The Very Hungry Caterpillar, first published in 1969.
The synopsis (Wikipedia):
"One Sunday morning, a red-faced caterpillar hatches from an egg, and begins to look for some food. He eats through increasing quantities of fruit on the following five days, one apple on Monday, two pears on Tuesday, three plums on Wednesday, four strawberries on Thursday, and five oranges on Friday, and then, on Saturday, he has an enormous feast. By the end of Saturday, the inevitable happens and he is ill. After recovering from a stomach-ache, he returns to a more sensible diet by eating through a large green leaf before spinning a cocoon in which he remains for the following 2 weeks. Later, the 'big fat caterpillar' emerges as a beautiful butterfly with large, gorgeous, multi-coloured wings."
Well, in this case, the menu differed. Our lady beetle larva didn't eat an apple, pear, plum, strawberry or orange.
He/she ate its competitor.
Author - Communications specialist